Coffee percolator



July 24, 1928. 1,678,543

R. wA'rsoN COFFEE PERcoLATn Filed sept. 24, 1927 i2 sheets-sheet 2 'lll .Patented July 24,11928.

. ui y l' tlblWEU Svllitililil PATENT BJED WATSON, 01E LAWRENCEVILLE, NEVI JERSEY.

COFFEE PERCOLATOR.

Application led September 24, 1927i Serial No. 221,837.

This invention relates to new and useful in'iprovements in coffee percolators of the relatively large capacity `type usually employedin restaurants and hotelsand aims to provide a highly novel and simple percolator wherein steam and water is caused to trickle through the coffee chamber resulting in the production oi' clear, pure and more tasty coiee than is now possiblekin the use ci percolators now on the market.

The invention further aims to provide a device ot this character wherein a plurality ot' chambers is provided tor receiving coi'ee so that varyingamounts thereof may be disposed within the device, dependent upon the nature of the coffee andthe strength desired.

ln the drawings wherein there is disclosed two embodiments of the `present invention,

Figurel A1 is a detail vertical section through one type ot'percolator,

Figure 2 is a horizontal section taken substantially upon the line 2 2 of Figure 1 and looking downwardly.

Figure 3 is a perspective of one of the Vforaniinous discs a plurality of whichare provided fto'r eiiecting the bottoni walls of the plurality of coi'i'ee chambers, and,

Figure l isa detail section of a modified ttorm ot percolator.

Now having particular reference to that form of the invention disclosed in Figures 1, 2 and 3, 5v designates a tank of relatively large capacity open at its upper end and provided with a suitable removable lid 6.

, Within the lower end of this receptacle there is a chamber 7 of heat retaining earthenware material leading' into which isa water supply pipe 8 while leading from this chamber at its lower end is a water discharge pipe 9 within each of which is a valve 8" and 9 respectively. Obviously the receptacle is to be disposed over a suitable burner A so that the water within the chamber 7 will be properly heated.

This chamber 7 is provided with a cleanout opening within which is normally difaposed a plug 10 access to which may be had through an opening in the receptacle Furthermore, this chamber 7 is provided with awater gage 11 while leading into the upper end thereof is a steam gage pipe 12 upon the outer end of which is a suitable gage 13 said pipe being equipped with a suitable How-oit valve 14. p

Arranged within the receptacle 5 above Hm Ammin-m 7 is an earthenware coffee receptacle 15 open at its upper end and being spaced at its upper end upon the upper open end of said receptacle 5. Removably di.;- posed within the upper end oit this earthenware receptacle 15 and depending therein is a stepped walled cylindrical chamber 17 open at its upper and lower end. This stepped wall construction provides a plurality ot' circular shoulders upon which are to be removably disposed discs of toraminous material 18 for cooperating with the various stepped portions of the chamber to provide a plurality oi coii'ee containers. Preferably these discs 18 are constructed centrally with hitting knobs'each ot' which is designated by the reference character 19 so'that the same may be readily removed from their respective coffee chambers. y

Leading from the bottom of the water chamber "i and extending upwardly at the outer side oit' the receptacle 5 is a combined water and steam pipe 20 while leading into this pipe' and communicating with the upper end of the chamber 7 is a steam pipe 21. Directlybeneath this steam pipe 21 the pipe 20 is provided with a valve 22 while said ysteam pipe 21 is providedV with a valve 23.

The upper end oi the Vpipe 2() leads into the receptacle 5r above the earthenware recep tacle 15 while swivelly attachedxto said vertical pipe 20 within the receptacle 5 as at 24 isa pipe 25 the inner endy of which is `provided with a semi-spherical perforated chamber 26 through which the water `and steamy exhausts into the coffee chambers.

Obviously steam generated into the vchamber 7 will when the valve 23 is opened pass upwardly through the pipe 20 into the steam dome 26 while at the same time hot water from the bottom of the chamber 7 will pass upwardly through the pipe 20 when the valve 22 is open so thatfthe hot water and steam will percolate through the coffee within the various coffee chambers.

The swivel joint 24: is provided in order` In order that coffee may be drawn trom l the earthenware receptacle 15 to permit the rre-percolation thereof a horizontal pipe 27 leads into the lower end of the receptacle 15 and communicates at its outer end with the llt) pipe 20. rlhis pipe 27 is provided at the outer side ol the receptacle 25 with a valve 28 which may be closed when it is not desired to re-percolate the coi'i'ee. By cutting oli the valve 22 and opening the steam valve 225, the steam passing upwardly through the pipe 2O will act as an ejector for drawing the coli'ee 'from the receptacle to pass the same into the dome 26 whereupon it will be discharged into the various coil'ee chambers.

fr suitable faucet 29 is provided -for withdrawing the col'i'ee from the eoli'ee receptacle 15 while said receptacle is provided with a suitable level gage 30.

in the form ot the invention shown Vin Figure il, 5 represents a relatively large receptacle within which is an earthenware re eeptacle l5 while removably arranged Within the upper end of this'earthenware receptaele is a multi-coiiiee chamber 7 similar to that disclosed in Fig. 1.

In this form of the invention however, there is provided a semispherieal chamber 3l to be disposed adjacent the receptacle and within which is an earthenware lining 32. This lining as well as the chamber are provided with registering openings while normally arranged within the opening of the Vlining a clean-out plug 33. Communicating with the interior ot this chamber is a suitable steam gage LeadingI Ylroin the lop of the chamber is a steam Vdischarge pipe 35 that communicates with a vertical pipe 20 at the outer side of the receptacle 5 that communicates at its upper end with a steam and water dome 26 within the receptacle 5' above the earthenware receptacle l5. Leading from the bottom of this earthenware receptacle is a cetifee return pipe 27 that con'nnunicates at its outer end with the lower end of the pipe and Within which is a suitable controi valve 28. In this instance also the pipe 20 adjacent its lower end coinniunicates with the interior ot the chamber tif/stas 3l adjacent the bottom thereol a suitable control valve 22 being provided whereby the water may be shut otf from the pipe 20. in the steam line 35 between the pipe 20 and the chamber Bl is a steam valve 28 and obvious-iy the general. operation ot this device will be the same as that disclosed in Figure l.

It will thus be seen that I have provided a highly n o vel, simple and extremely eiiieient coilee percolator that is well adapted for all of the purposes heretofore designated and even though I have herein shown and described. the invention as consisting oit certain detail structural elements, it is nevertheless to be understood that minor changes may be made .therein without affecting the spirit and scope ot the appended claim.

Havii'ig thus described my invention, what i" claim as new is In a percolating device of the character described, a. water chamber, a coffee chamber, said water chamber adapted to be disposed over a suitable heating unit, a. steam conducting pipe extending from the water chamber, said pipe having a discharge end Within the upper portion of thel coi'iee chamber, a branch pipe connecting the steam pipe with the bottom portion of .the coffee chamber, whereby coii'ee trom the bottom ot' the eotiee chamber will .be conducted through the steam pipe and into the upper portion ot the coffee chan'ilber, a coii'ee container arranged within the upper portion of the cotliee chamber and under the discharge end of the steam pipe, said container 'being provided with a stepped wall converging toward the central opening in its bottom, and foraminous plates arranged within the coiee container and upon the steps formed in the wall of :said container, isaid plate being adapted to support a quantity of coffee.

in testimony whereof I aliix my signature.

REID WATSON. 

